balliet



(N-o` Model.)v 2 Sheets-Sheet 2.

f ILBALLIET. Pump Rod Adjuster forv Oi-l Wells.

v liz/@702.6271 am@ w NJErERS. PHoTo-LITNDGRAPHER, WASHINGYON. D. C.

UNITED STATES PATENT (Erica,

HENRY BALLIET, OF OLEAN, NEW YORK.

PUMP-ROD ADJUST-ER FOR OIL-WELLS.

SPECIFICATION forming part of Letters Patent No. 229,354, dated. June29, 1880. Application nlea April 23, 1880. (No model.)

To all whom it may concern:

Be it known that I, HENRY BALLTET, a

citizen of the United States, residing at Olean,` ,in the county ofGattaraugus and State of which are employed for the purpose ofconnecting whatis comnlonly known as the polish-rod of pumps for oil orArtesian wells with the working-beam. The great strain upon thepolish-rod renders it essential that the trunnion-head, which connectsit with the working-beam, should hold the rod very firmly' in order toprevent its slipping. It is also dej sirable that the trunnion-headshould be of simple and durable construction, and that the parts whichclamp the rod should be adapted forl the convenient adjustment of thepolishrod, as required.

The objects of myimprovelnents are to wedge the polish-rod jin a mortiseof peculiar shape formed through the trunnion-head, through which therod passes, without the aid of loose orindependent wedges; to provide anadjustable cylindrical bearing-jaw inclosed within a walled recess inthe trunnion-head, so as to act in opposition to the wedge action of thecross-head mortise upon the polish-rod, Whereby, in the adjustment ofsaid bearing-jaw, the polish-rod will be both clamped and wedged. Acylindrical passage leads through one of the trunnions to the walledrecess of the bearin gjaw, so that said bearing-jaw can be intro- .ducedat the end of said `trunnion and passed along through the trunnion-headto its sea-t in the walled recess.

Referring to the accompanying drawings, Figure l represents a verticalsectional view ofthe trunnion-head and a portion ofthe polish-rodsecured therein 5 Fig. 2, a silnilar View with the polish-rod removed;Fig. 3, a horizontal section, showing the polish-rod griped by the wedgeaction of the mortise through which it passes; Fig. 4, a cross-sectionthrough the mortise of the cross-head, looking in the direction of thebearing-jaw, the polish-rod being removed 5 i Fig.- 5, a similarsection, looking in the direction -of the angular corrugated land seatedin the line of the trunllions.

sides of the mortise, and Fig. 6 the cylindrical bearing-jaw.

The head proper or cellter A and the trunnions t a are formed ill onecasting, and in its application for use the trullnions are journaled inthe bifurcation of the forked end ofthe working-beam, as is usual inthis class of devices. A nlortise, B, is formed through thc `head orcenter, `through which the polish-rod :is passed. The distinguishingfea-ture of the mortise is that it is heart-shaped, so that when thepolish-rod is clamped by the devices presently described, it will beforced toward the allgular portion ofthe mortise, the sides b b of whichserve as wedges, thus dispensing with independent wedges and adding tothe ciciency of the clamping devices in securi n g the polish-rod to thetrunnion-head.

The head or center A is formed with a walled recess, C, which opens intothe transverse mortise of the trunnion-head coincident with the `axis ofsaidtrunnions, and wllich is designed to receive a bearing-jaw, D, ofcylindrical form This bearing-jaw consists of a cylindrical block hav-'ing one end concaved, as at d, such concavity being made with referenceto the size of the polish-rod, in order that the bearing will lap andfit closely to the said rod to nearly the extent of a semicircle. thisfbearing-jaw lnay be roughened or corrulgated, so that it will take abetter bite upon the polish-rod, and the sides of the angular Theconcaved end of portion of the transverse mortise through theltrunnion-head may also,v be roughened or corrugated for a similarpurpose. These corru- `gations are fornled so as to be at right angleslinto the walled recess which contains the bearing-jaw D. In thedrawings the set-screw is represented as being formed with a cylindricalend bearing-pin, F, which is passed through a passage in the bearingjawD. This pin F, however, may be dispensed with, so that the end of theset-screw alone acts upon the bearing-jaw. In either case thebearing-jaw will be effectively clamped against the polish-rod by turning the set-screw, andthe said rod will, by such action, be forced towardthe angular part of the mortise and thereby firmly wedged and held inplace. l

It is, of course, understood that in the abovementioned instance, wherethe pin is formed upon the end ofthe set-screw, the area of the Openin gthrough the bearing will be sufficiently great to admit of the freerotation ofthe pin conjointly with the turning of the set-screw.

In order to seat the bearing-jaw within the walled recess, the trunnionwhich is opposite to that trunnion through which the set-screw is passedis formed with a central bore, G, which opens into the mortise B. rlhebore through said trunnion is of su'liicient area to admit of thepassage of the bearingjaw, which is first introduced into the outer endofthe bore and then passed along until it reaches the mortise, and as acontinuation of said bore the area of the mortise will at this point besufficiently enlarged to admit of the further passage of the bearing-jawinto the walled recess, such enlargement being on opposite sides of saidmortise and forming guides c to said jaw in its passage across themortise.

The bearing-jaw is of such dimensions that it can by nopossibility dropout through either end of or turn in the mortise B, and hence, in caseof the detachment of the polish-rod from the trunnion-head, there willbe no liability of the falling out of the bearing-jaw. rI lhe trunnionlast mentioned is screw-tapped at the end ofthe bore, and a screw-tap,H, is fitted to such end, so as to close the bore after the bearingjawhas been introduced and passed to its proper position.

It will be observed that the enlargement of the mortise to admit ofthepassage of the bearing-jaw constitutes two guide-channels, c, for saidjaw at opposite sides in the mortise, said channels running parallelwith the axis of the cross-head.

It will also be seen that the walls of the recess C converge into saidchannels at e', such yconformation being required in order to bring theconcave face of the bearing-jaw flush with the wall ofthe mortise, or atleast topre-vent the bearing from presenting any obstacle to theinsertion of the polish-rod through the mortise.

After the bearing-jaw has been placed in proper position within thewalled recess and. the polish-rod passed through the mortise in thetrunnion-head, the set-screw will be tightened up until the rod has beenrmly griped between the concave face of the bearing-jaw and the walls ofthe angular portion of the heart-shaped mortise.

The trunnipns will, during operation, have the usual rotary movements intheir bearings incident to the working of the pump.

By having the gripe upon the polislrrod in the line of the axis of thetrunnions the strain upon the clamping parts is concentrated and verymuch reduced, and the clamping-screw is not so liable to work loose;and, in connection with such arrangement, it is important that the gripeupon the rod should be as effective as possible. It is for this purposethat I make one side ofthe cross-mortise in a head having side trunnionsof angular form, and opposite this angular side, within an inclosedrecess, and midway between the ends of the mortise, the cylindricalbearing-jaw is seated within a cylindrical recess open at both ends inthe line of the axis of the trunnions, and of a diameter just aboutequal to that of the polish-rod, so that the gripe is made at a pointbetween the ends of the mortise and within an area less than thediameter of the trunnions, the effect of 'which is to give a longbearing for the rod within the mortise and a comparatively shortgriping-surface arranged at a point to exert the most effective clampupon the rod. The action of this griping-plug is infinitely morereliable than that of a screw and gives a far better bearing than couldbe obtained by a pressure-block of equal length with thecrossmortise,`whether kept to its set by a screw acting at right anglesto the axis of the trunnions or a cam-lever acting in the line of theaxis ofthe trunnions upon such long pressureblock.

lhe important matter is to get a long bean ing in the cross-head and ashort and perfectl y effective and reliable gripin g-point upon the rodin theline of the axis of the trunnions,

An angular mortise within which thepolishrod is clamped and within whichit is adjusted is not claimed, broadly; but such form of mortisecrossing the axis of the trunnions, in connection with a griping-jaw ofcylindrical form placed in the line of said axis and of a diameter lessthan that of the trunnions, has functions and advantages not possible inthe former plans.

But there is still another point of great importance in my invention,and that is that the interception orinterruption of the angular sides orwalls of the mortise by the trunnion-bore Gr practically divides thebearing, so that there will be no contact of the rod at the crossing ofthe trunnion bore G; or, in other words, there will be no bearing-pointfor the rod in the mortise directly opposite the cylindricalgriping-jaw, and therefore the rod will be practically securedagainst'the angular mortise- Walls at points on each side of thetrunnionbore, because the griping pressure of the jaw will be opposed tothe rod at a point inline with and opposite a space which affords nobearing-surface for the rod. The pressure upon the rod at this pointwill give it an inappreciable bulge or spring, and therefore effect aIOO IIO

secure and positive gripe at two points of bearing, beyond which the rodcannot slip, because the rod will practically have a bearin g on eachside of the bore G, with the pressure-jaw in intermediate relationthereto and on the side of the rod opposite to said separate bearings.`The bore G is therefore not only important as a way through which thecylindricalbearin gjaw is introduced to its seat, but as the means offorming the cross-division in the niortise and open back opposite thepressure-plug.

I claim- 1. The combination, in an oil-Well pump, of the trunnion-headhaving the trunnions a. a, -the mortise B, formed with angular sides bb, divided in theline of the axis of said trunnions to form anon-bearing interval, with the clamping-jaw in position opposite to andin line with said intermediate non-bearing interval for the purpose ofholding` the polish-rod, substantially as herein set forth.

2. The trunnion-head of an oil-Well-rod adjuster, having the angularmortise B, the trunnion-bore Gr, forming a junction with said mortise,the opposite trunnion having a screwthreaded axial opening and acylindrical recess larger than the said screw-opening and communicatingtherewith and with the crossmortise B, and adapted for use with thecylindrical bearing-jaw to hold the polish-rod, substantially as hereinset forth.

3. In a polish-rod adjuster for oil-wells, the combination of thetrunnionhead, having an angular cross-mortise, with a cylindrical bearing-jaw havin gaconcave end and seated within an inclosed recess ofcorresponding form in one side of said mortise, and a screw, E, ar-

ranged axially within one of the trunnions to enter said recess and actupon the cylindrical bearing-jaw to hold the rod, substantially asherein set forth.

4. The trunnion-head formed with a walled recess at one side of amortise formed'trans` end of the saidtrunnion, substantially as and forthe purpose specified.

5. In a trunnionhead adapted to connect the polish-rod with theworking-beam in apump for oil or Artesian wells, the heartshaped mortiseB, enlarged at a point between the Walled recess C and the bore G of onetrunnion, whereby to provide a guideway for the bearing-jaw in itspassage to the Walled recess, substantially as set forth.

6. In a trunnion head adapted to connect the polish rod with thewalkingbeam, the trunnion-head A, formed With a heart-shaped or angularmortise, through which the polishrod passes, in combination with thebearingjaw arranged for action upon the polish-rod in direct oppositionto the point or angular sides ofthe said rnortise, substantially asherein set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

HENRY BALLIET.

Witnesses:

M. A. DODGE,

A. H. ABBEY.

